TIMTER™ Multi-mode Digital Telemetry Transmitter
13
Quasonix, Inc.
Table 11: Standard Data Bit Rates and Rate Adaptation Compared to Clock Free Data Bit Rates
Data (bit) rate,
automatic rate
adaptation
TIMTER:
0.1-28 Mbps (0.05-14 Mbps for PCM/FM)
TIMTER
option
HR:
Extends upper limit to max of 46 Mbps for SOQPSK
and ARTM CPM (23 Mbps for PCM/FM)
TIMTER
option
LR:
Extends lower limit to min of 50 kbps for SOQPSK
and ARTM CPM (25 kbps for PCM/FM)
Clock Free Data
(bit) rate
With BR x command:
Allows user to enter a fixed bit rate in the range
defined in the Data (bit) rate specifications above
With BR A command:
Automatically detects bit rate in the range defined in
The Data (bit) rate specifications above; Quasonix
guarantees automatic bit rate operation up to 35 Mbps;
beyond that operation is dependent on input data
signal quality (jitter, truly random data, etc.)
1.3.18 Clock Generator Output Option
– CG
The standard TIMTER includes internal clock and data generators, generally used for system test. The CG option
enables this internal clock out of the unit on the primary MDM-15 connector. The assignment of output pins
depends on the other features selected.
1.3.19 Dual Power Option
– DP
The standard TIMTER operates at its full rated RF output power. The DP option provides two software-
programmed, hardware-actuated settings, designated by the user as “high power” and “low power”. There are 32
choices for “high power” and 32 choices for “low power”. The low power setting can provide as much as 24 dB of
attenuation from the high power setting.
1.3.20 Digital Switch Box Option
– DSWBX
The TIMTER™ provides a standard configuration interface that is easily accessible via a computer terminal. Some
users prefer configuration via an external switch box. The 2
nd
Generation Quasonix switch box provides six LED
digits used to display the mode and frequency. This includes a total of five digits of frequency step up or down, in
MHz, and one digit of mode selection, in terms of the ARTM “Tier” number. There is also a channel selector for
channel 1 or channel 2. Two channel operation is only valid when connected to a Dual Telemetry Transmitter.
Standard transmitters default to Channel 1. An 18” MDM-9 to MDM-9 cable harness is included with the switch
box. (For use with the P9 option)
1.3.21 Ethernet Payload Capability
– EN
The –EN option gives the transmitter the ability to send Ethernet data via direct connection to a standard Ethernet
network. Operating in Ethernet mode, the user sets the desired transmission rate through the transmitter control
interface. As Ethernet data are presented to the TIMTER, they are loaded into a large transmit buffer. If the
presented Ethernet traffic does not keep the buffer filled, bit stuffing is used to attain the programmed transmit rate.
If the presented traffic overflows the buffer, Ethernet data are discarded.
The Ethernet interface is supported via an MDM-9 connector, and is compatible with 10Base-T and 100Base-TX
Ethernet physical layers. The maximum transmission rate is 46 Mbps. Use of a transmitter with the –EN option
requires a Quasonix RDMS™ receiver to reconstruct the Ethernet data at the receive end.
Pre-assembled MDM-9 Male to RJ-45 (T568A standard) cables are available from Molex:
Содержание TIMTER QSX-V Series
Страница 39: ...TIMTER Multi mode Digital Telemetry Transmitter 31 Quasonix Inc Figure 22 Baseband Signal Timing ...
Страница 101: ...TIMTER Multi mode Digital Telemetry Transmitter 93 Quasonix Inc Figure 41 Shock Pulse X axis Negative ...
Страница 109: ...TIMTER Multi mode Digital Telemetry Transmitter 101 Quasonix Inc Figure 42 Transmitter Clock and Data Logic ...